mirror of
https://github.com/openobserve/openobserve.git
synced 2026-11-04 08:09:27 +00:00
81 lines
2.7 KiB
Rust
81 lines
2.7 KiB
Rust
use chrono::{DateTime, Datelike, Duration, FixedOffset, NaiveDateTime, TimeZone, Timelike, Utc};
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use std::ops::Sub;
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fn main() {
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let s = "2022-09-27T00:00:00Z";
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let time = DateTime::parse_from_rfc3339(s).unwrap();
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println!("{:?}, {:?}", time, time.timestamp_micros());
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let s = "2022-08-29 18:23:23";
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let fmt = "%Y-%m-%d %H:%M:%S";
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let time = NaiveDateTime::parse_from_str(s, fmt).unwrap();
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println!("{:?}", time);
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let s = "2022-09-27T18:23:23+08:00";
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let fmt = "%Y-%m-%dT%H:%M:%S%z";
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let time = NaiveDateTime::parse_from_str(s, fmt).unwrap();
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println!("{:?}", time);
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/* let dt = Utc.with_ymd_and_hms(2022, 9, 12, 2, 0, 0).unwrap(); // `2014-07-08T09:10:11Z`
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println!("{:?}, {:?}", dt, dt.timestamp_micros());
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*/
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let dt = Utc.timestamp_nanos(1661752800000000000);
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println!("{:?}", dt);
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let dt = Utc.timestamp_nanos(1661731871000000000);
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println!("{:?}", dt);
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let dt = Utc.timestamp_nanos(1662102671000000000);
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println!("{:?}", dt);
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let dt = parse_time("2022-08-29 18:23:23").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-08-29T18:23:23Z").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-08-29T18:23:23+08:00").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-10-13T04:38:52.260290946+08:00").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-10-13T04:38:52.260290946Z").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-10-13T04:38:52.260Z").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-10-13T04:38:52Z").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-10-13T04:38:52").unwrap();
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println!("{:?}", dt.to_string());
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let dt = parse_time("2022-10-13 04:38:52").unwrap();
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println!("{:?}", dt.to_string());
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let dt = chrono::Utc::now().timestamp_micros();
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println!("{:?}", dt);
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let now = Utc::now().sub(Duration::hours(1));
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let offset: DateTime<Utc> = Utc
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.with_ymd_and_hms(now.year(), now.month(), now.day(), now.hour(), 0, 0)
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.unwrap();
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println!("{:?}", now);
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println!("{:?}", offset);
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}
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fn parse_time(s: &str) -> Result<DateTime<FixedOffset>, anyhow::Error> {
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if s.contains('T') {
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if s.len() == 19 {
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let fmt = "%Y-%m-%dT%H:%M:%S";
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let ret = Utc.datetime_from_str(s, fmt)?;
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Ok(ret.into())
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} else {
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Ok(chrono::DateTime::parse_from_rfc3339(s)?)
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}
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} else if s.contains(',') {
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Ok(chrono::DateTime::parse_from_rfc2822(s)?)
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} else {
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let fmt = "%Y-%m-%d %H:%M:%S";
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let ret = Utc.datetime_from_str(s, fmt)?;
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Ok(ret.into())
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}
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}
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